diff --git a/hplip-model-mismatch.patch b/hplip-model-mismatch.patch
index 9b416f8..594f205 100644
--- a/hplip-model-mismatch.patch
+++ b/hplip-model-mismatch.patch
@@ -26,7 +26,7 @@ index 20df27a..7ed4918 100644
         {
            stat = HPMUD_R_INVALID_URI;  /* different device plugged in */
 diff --git a/io/hpmud/model.c b/io/hpmud/model.c
-index d546ec1..5bb6091 100644
+index d546ec1..d1809a9 100644
 --- a/io/hpmud/model.c
 +++ b/io/hpmud/model.c
 @@ -407,7 +407,10 @@ static int ParseFile(char *datFile, char *model, char *attr, int attrSize, int *
@@ -41,22 +41,24 @@ index d546ec1..5bb6091 100644
  
     if ((fp = fopen(datFile, "r")) == NULL)
        goto bugout;
-@@ -422,10 +425,16 @@ static int ParseFile(char *datFile, char *model, char *attr, int attrSize, int *
+@@ -420,12 +423,18 @@ static int ParseFile(char *datFile, char *model, char *attr, int attrSize, int *
+       if (rcbuf[0] == '[')
+       {
           strncpy(section, rcbuf+1, sizeof(section)); /* found new section */
-          n = strlen(section);
+-         n = strlen(section);
           section[n-2]=0; /* remove ']' and CR */
--         if (strcasecmp(model, section) == 0 ||
++         n = strlen(section);
+          if (strcasecmp(model, section) == 0 ||
 -            (section[0] == 'h' && section[1] == 'p' &&
 -             section[2] == '_' &&
 -             strcasecmp(model, section + 3) == 0))
-+         if ((strcasecmp(model, section) == 0) ||
 +             (section[0] == 'h' &&
 +              section[1] == 'p' &&
 +              section[2] == '_' &&
 +              strcasecmp(model, section + 3) == 0) ||
 +             (n > model_len &&
 +              strncasecmp(section, model, model_len) == 0 &&
-+              strncasecmp(section + model_len, "_series", strlen("_series") == 0)
++              strncasecmp(section + model_len, "_series", strlen("_series")) == 0
 +             )
 +            )
           {
diff --git a/hplip.spec b/hplip.spec
index 98a4838..62b8a3c 100644
--- a/hplip.spec
+++ b/hplip.spec
@@ -7,7 +7,7 @@
 Summary: HP Linux Imaging and Printing Project
 Name: hplip
 Version: 3.20.6
-Release: 7%{?dist}
+Release: 8%{?dist}
 License: GPLv2+ and MIT and BSD and IJG and Public Domain and GPLv2+ with exceptions and ISC
 
 Url: https://developers.hp.com/hp-linux-imaging-and-printing
@@ -738,6 +738,9 @@ rm -f %{buildroot}%{_sysconfdir}/xdg/autostart/hplip-systray.desktop
 %config(noreplace) %{_sysconfdir}/sane.d/dll.d/hpaio
 
 %changelog
+* Mon Aug 24 2020 Zdenek Dohnal <zdohnal@redhat.com> - 3.20.6-8
+- typo in hplip-model-mismatch.patch causes regression for 1772698
+
 * Wed Aug 05 2020 Zdenek Dohnal <zdohnal@redhat.com> - 3.20.6-7
 - don't build gui for newer RHELs